COMPARATIVE SPIISTNUSTG TESTS. 17 



at the discretion of the manufacturer, provided he meets the require- 

 ments of contract as to the strength and quahty. Manufacturers 

 who have experimented with the Arizona-Egyptian cotton have 

 found that it is less wasty than other cottons and that it can be 

 utilized satisfactorily as a substitute for most purposes; but so long 

 as the manufacturer meets his contract, the amount of waste dis- 

 carded in the manufacturing processes is not primarily of interest to 

 the converter or consumer. In fact, manufacturers are reluctant to 

 change while their business is on a profitable basis. However, on 

 certain classes of goods, mixtures of two different cottons are made to 

 advantage. Because the Arizona-Egyptian is a heavy bodied cotton, 

 it is entirely possible that the entire amount produced can be utilized 

 advantageously if mixed properly with these other cottons in the 

 manufacturing processes. Manufacturers claim that the sooner this 

 cotton comes on the market in large quantities, the easier will it be 

 to place it on a competitive basis with other long-staple cottons of 

 similar qualities. 



COMPARATIVE SPINNING TESTS MADE FROM THE CROP OF 1913-14. 



Previous to the tests made in the summer of 1915, there were 

 similar tests coaducted in the summer of 1914 on cotton of the 1913 

 crop.^ These prehminary tests were made on about 35 pounds of 

 each grade of Arizona-Egyptian cotton and were run in comparison 

 with a lap of Sakellaridis Egyptian and a lap of Sea Island cotton 

 which had been run through the pickers in a cotton miU. There was 

 not available a sufficient quantity of Arizona-Egyptian cotton to 

 make these tests conclusive, nor were the Sakellaridis Egyptian nor 

 the Sea Island cotton procured in the raw condition. It was assumed 

 that the laps of the Sakellaridis and the Sea Island cottons had lost 

 their usual amount of waste through the pickers and contained the 

 average amount of waste usually present in cottons of their class 

 when ready to be started into the cards. From this point on, the 

 different lots were run under the same mechanical conditions without 

 change in speeds or settings. The length of staple of the three lots 

 was approximately equal. 



The percentages of waste for the five grades of Arizona-Egyptian 

 cotton, based on the net amount of cotton fed to the pickers, were as 

 foUows: 



Per cent. . 



Fancy 16. 38 



Extra 16. 35 



Choice 17. 44 



Standard : 23. 99 



Mediiun 24. 35 



1 These tests were conducted at the New Bedford Textile School by Mr. Fred Taylor. 



